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