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