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