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