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