One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,4,5)(3,6,7,8)(9,10)(11,16)(12,15)(13,14)(17,18,23,28)(19,29,20,25)(21,34,37,26)(22,38,24,27)(30,40,32,46)(31,41,33,42)(35,43,47,48)(36,44,39,45)(2,5)(6,8)(9,10)(11,16)(12,15)(13,14)(17,19,23,20)(18,25,28,29)(21,35,37,47)(22,31,24,33)(26,43,34,48)(27,41,38,42)(30,39,32,36)(40,44,46,45)(1,3,4,7)(2,6,5,8)(10,14)(15,16)(17,20,23,19)(18,25,28,29)(21,32,37,30)(22,31,24,33)(26,40,34,46)(27,42,38,41)(35,36,47,39)(43,44,48,45)(9,11,13,12)(10,15,14,16)(17,21,22,39,23,37,24,36)(18,26,38,44,28,34,27,45)(19,30,33,47,20,32,31,35)(25,40,41,48,29,46,42,43)(2,5)(6,8)(9,12,13,11)(10,15,14,16)(17,22,23,24)(18,27,28,38)(19,31,20,33)(21,36,37,39)(25,41,29,42)(26,44,34,45)(30,47,32,35)(40,43,46,48)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.