One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,9)(4,8)(5,6)(7,10)(11,15)(12,13)(14,16)(17,18)(19,22)(20,28)(21,24)(23,29)(25,27)(26,31)(30,32)(33,34,38,42)(35,40,45,39)(36,46,41,37)(43,48,47,44)(2,6)(7,9)(8,13)(14,15)(17,18)(19,25)(20,28)(21,24)(22,27)(23,29)(26,30)(31,32)(33,34)(35,39)(36,37)(38,42)(40,45)(41,46)(43,48)(44,47) involution — undirected(3,10)(4,12)(7,9)(8,13)(17,18,21,24)(19,25,27,22)(20,23,29,28)(26,31,32,30)(33,35,38,45)(34,39,42,40)(36,47,41,43)(37,44,46,48)(1,3,5,10)(2,7,6,9)(4,11,12,16)(8,14,13,15)(17,18)(19,22)(20,23)(21,24)(25,27)(26,30)(28,29)(31,32)(33,36,38,41)(34,37,42,46)(35,43,45,47)(39,48,40,44)(1,4)(2,8)(3,11)(5,12)(6,13)(7,14)(9,15)(10,16)(17,19)(18,22)(20,26)(21,27)(23,30)(24,25)(28,31)(29,32)(33,35)(34,40)(36,43)(37,44)(38,45)(39,42)(41,47)(46,48) involution — undirected(1,2)(3,7)(4,8)(5,6)(9,10)(11,14)(12,13)(15,16)(17,20)(18,23)(19,26)(21,29)(22,30)(24,28)(25,31)(27,32)(33,37)(34,41)(35,44)(36,42)(38,46)(39,43)(40,47)(45,48) involution — undirectedA Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.