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