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