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