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