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