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