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