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