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