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