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)(11,15)(12,14)(13,16)(17,18)(19,29)(20,25)(21,38)(22,28)(23,27)(24,33)(26,37)(30,43)(31,41)(32,42)(34,46)(35,40)(36,45)(39,44)(47,48) involution — undirected(2,5)(6,8)(9,11)(10,13)(12,16)(14,15)(17,19,22,33)(18,24,28,29)(20,35,37,30)(21,34,23,32)(25,43,26,40)(27,46,38,42)(31,39,48,36)(41,45,47,44)(10,14)(11,16)(17,20)(18,25)(19,30)(21,39)(22,37)(23,36)(24,40)(26,28)(27,45)(29,43)(31,34)(32,48)(33,35)(38,44)(41,46)(42,47) involution — undirected(1,3,4,7)(2,6,5,8)(10,14)(13,15)(17,20)(18,26)(19,31)(21,36)(22,37)(23,39)(24,41)(25,28)(27,45)(29,47)(30,34)(32,35)(33,48)(38,44)(40,46)(42,43)(2,5)(6,8)(10,14)(13,15)(17,21,22,23)(18,27,28,38)(19,32,33,34)(20,36,37,39)(24,42,29,46)(25,44,26,45)(30,31,35,48)(40,41,43,47)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.