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