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