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