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