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