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