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