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