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