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