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