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