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