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