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