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