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