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)(17,18)(19,25)(20,22)(21,28)(23,26)(24,30)(27,31)(29,32)(33,34)(35,38)(36,40)(37,39)(41,46)(42,45)(43,48)(44,47) involution — undirected(1,3,7,15)(2,8,10,11)(4,12,9,16)(5,13,6,14)(17,19)(18,23)(20,25)(21,29)(22,26)(24,32)(27,30)(28,31)(33,35,37,41)(34,38,39,46)(36,43,44,42)(40,48,47,45)(1,4,7,9)(2,5,10,6)(3,12,15,16)(8,13,11,14)(17,20,22,18)(19,25,26,23)(21,28,30,24)(27,32,29,31)(34,39)(35,41)(36,44)(45,48)(1,5,7,6)(2,9,10,4)(3,13,15,14)(8,16,11,12)(18,20)(19,26)(24,28)(27,29)(33,36,37,44)(34,40,39,47)(35,42,41,43)(38,45,46,48)(1,5,7,6)(2,4,10,9)(3,14,15,13)(8,16,11,12)(17,21,22,30)(18,24,20,28)(19,27,26,29)(23,31,25,32)(34,39)(35,41)(40,47)(42,43)(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.