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