One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,9)(4,12)(5,6)(7,11)(8,13)(10,14)(15,16)(17,18,22,24)(19,23,27,31)(20,25,28,30)(21,26,29,32)(33,34)(35,41)(36,38)(37,47)(39,42)(40,46)(43,48)(44,45)(2,6)(7,9)(8,12)(14,15)(17,19)(18,23)(20,21)(22,27)(24,31)(25,26)(28,29)(30,32)(33,35)(34,40)(36,43)(37,44)(38,45)(39,46)(41,42)(47,48) involution — undirected(2,6)(4,13)(7,9)(10,16)(18,24)(19,27)(21,29)(25,30)(33,36,39,37)(34,38,42,47)(35,43,46,44)(40,45,41,48)(1,3,5,11)(2,7,6,9)(4,10,13,16)(8,14,12,15)(17,20)(18,25)(19,21)(22,28)(23,26)(24,30)(27,29)(31,32)(33,37,39,36)(34,38,42,47)(35,44,46,43)(40,45,41,48)(1,2)(3,9)(4,8)(5,6)(7,11)(10,15)(12,13)(14,16)(17,21)(18,26)(19,28)(20,27)(22,29)(23,30)(24,32)(25,31)(33,35)(34,41)(36,44)(37,43)(38,45)(39,46)(40,42)(47,48) involution — undirected(1,4)(2,8)(3,10)(5,13)(6,12)(7,14)(9,15)(11,16)(17,18)(19,23)(20,25)(21,26)(22,24)(27,31)(28,30)(29,32)(33,38)(34,36)(35,45)(37,42)(39,47)(40,43)(41,44)(46,48) 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.