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