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