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