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)(17,18,21,24)(19,22,25,26)(20,23,28,30)(27,29,31,32)(33,34)(35,36)(37,45)(38,39)(40,46)(41,42)(43,48)(44,47)(2,7)(4,8)(9,13)(12,15)(17,18)(19,22)(20,23)(21,24)(25,26)(27,29)(28,30)(31,32)(33,35)(34,36)(37,43)(38,41)(39,42)(40,44)(45,48)(46,47) involution — undirected(2,7)(4,8)(5,14)(10,16)(19,25)(20,28)(22,26)(23,30)(34,39)(35,41)(37,46)(44,48) involution — undirected(1,3,6,11)(2,8,7,4)(5,10,14,16)(9,15,13,12)(17,18)(19,26)(20,23)(21,24)(22,25)(27,32)(28,30)(29,31)(33,36)(34,35)(37,44)(38,42)(39,41)(40,43)(45,47)(46,48)(1,4,6,8)(2,3,7,11)(5,12,14,15)(9,10,13,16)(17,19)(18,22)(20,27)(21,25)(23,29)(24,26)(28,31)(30,32)(33,34)(35,42)(36,41)(37,40)(38,39)(43,48)(44,47)(45,46)(1,5,6,14)(2,9,7,13)(3,10,11,16)(4,12,8,15)(17,20)(18,23)(19,27)(21,28)(22,29)(24,30)(25,31)(26,32)(33,37,38,46)(34,40,39,45)(35,43,41,47)(36,44,42,48)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.