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